diff --git a/src/system/boot/platform/efi/arch/arm/Jamfile b/src/system/boot/platform/efi/arch/arm/Jamfile
index 1862f117e3..830735ccf3 100644
--- a/src/system/boot/platform/efi/arch/arm/Jamfile
+++ b/src/system/boot/platform/efi/arch/arm/Jamfile
@@ -10,6 +10,7 @@ local arch_src =
 	#entry.S
 	relocation_func.cpp
 	arch_smp.cpp
+	arch_start.cpp
 	arch_mmu.cpp
 	arch_timer.cpp
 	;
diff --git a/src/system/boot/platform/efi/arch/arm/relocation_func.cpp b/src/system/boot/platform/efi/arch/arm/relocation_func.cpp
index 207b7fcd32..430547bc42 100644
--- a/src/system/boot/platform/efi/arch/arm/relocation_func.cpp
+++ b/src/system/boot/platform/efi/arch/arm/relocation_func.cpp
@@ -39,7 +39,7 @@
 
 #include <elf.h>
 
-efi_status _relocate(long ldbase, Elf32_Dyn *dyn,
+extern "C" efi_status _relocate(long ldbase, Elf32_Dyn *dyn,
 		      efi_handle image __attribute__((__unused__)),
 		      efi_system_table *systab __attribute__((__unused__)))
 {
diff --git a/src/system/boot/platform/efi/start.cpp b/src/system/boot/platform/efi/start.cpp
index b420ae037d..e871b236bd 100644
--- a/src/system/boot/platform/efi/start.cpp
+++ b/src/system/boot/platform/efi/start.cpp
@@ -43,7 +43,7 @@ efi_handle kImage;
 
 
 static uint32 sBootOptions;
-
+void* gFDT;
 
 extern "C" int main(stage2_args *args);
 extern "C" void _start(void);
@@ -177,6 +177,7 @@ extern "C" efi_status
 efi_main(efi_handle image, efi_system_table *systemTable)
 {
 	stage2_args args;
+	gFDT = NULL;
 
 	memset(&args, 0, sizeof(stage2_args));